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AI brief of an SEC Form 8-K · Ark 21Shares Bitcoin ETF (ARKB)

ARKB ETF Sponsor Ends ARK Support Services Agreement Effective December 22, 2026

Neutral Impact 3 of 5 product/contract Written later

Sponsor 21Shares US LLC gave notice on October 16, 2026 to terminate its marketing and sub-advisory agreement with ARK Investment Management, effective December 22, 2026. The Trust plans to rename itself 21Shares Bitcoin ETF and change its Cboe BZX ticker from ARKB to TBIT on December 15, 2026.

Key points

  • Notice of termination given to ARK Investment Management on October 16, 2026
  • Termination effective December 22, 2026
  • On December 15, 2026, the Sponsor intends to rename the Trust to 21Shares Bitcoin ETF
  • Ticker on Cboe BZX would change to TBIT

The filing

CompanyArk 21Shares Bitcoin ETF (ARKB)
Form8-K, current report
Filed with the SECOct 22, 2026, 4:01 PM ET
Accession number0001213900-26-111688

Items reported: 1.02 Termination of Material Agreement

Read the filing on SEC.gov ↗

Written by AI on Nov 9, 2026, 11:44 AM ET, from this filing only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on October 22, 2026.

Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.